{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["GENE"], "input": "Both verapamil and propranolol can exhibit additive effects with adenosine in prolonging AV nodal conduction time ; however , only verapamil can reduce the dose of adenosine required to produce AV nodal block ."}
{"GENE": []}